<html>
    <head>
        <title>Itowns - Navigation widget</title>

        <script type="importmap">
        {
            "imports": {
                "itowns": "../dist/itowns.js",
                "debug": "../dist/debug.js",
                "dat": "https://unpkg.com/dat.gui@0.7.9/build/dat.gui.module.js",
                "GuiTools": "./jsm/GUI/GuiTools.js",
                "LoadingScreen": "./jsm/GUI/LoadingScreen.js",
                "itowns_widgets": "../dist/itowns_widgets.js",
                "three": "https://unpkg.com/three@0.170.0/build/three.module.js",
                "three/addons/": "https://unpkg.com/three@0.170.0/examples/jsm/"
            }
        }
        </script>

        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">

        <link rel="stylesheet" type="text/css" href="css/example.css">
        <link rel="stylesheet" type="text/css" href="css/LoadingScreen.css">

        <!-- Import stylesheet for itowns Widgets plugin. This stylesheet is included in the bundles if you downloaded
        them, or it can be found in `node_modules/itowns/examples/css` if you installed iTowns with npm. Otherwise, it
        can be found here : https://raw.githubusercontent.com/iTowns/itowns/master/examples/css/widgets.css -->
        <link rel="stylesheet" type="text/css" href="css/widgets.css">

    </head>
    <body>
        <div id="viewerDiv"></div>
        <script type="module">

            import GuiTools from 'GuiTools';
            import setupLoadingScreen from 'LoadingScreen';
            import * as THREE from 'three';
            import * as itowns from 'itowns';
            import * as debug from 'debug';
            import * as itowns_widgets from 'itowns_widgets';



            // ---------- CREATE A GlobeView FOR SUPPORTING DATA VISUALIZATION : ----------

            // Define camera initial position
            const placement = {
                coord: new itowns.Coordinates('EPSG:4326', 2.351323, 48.856712),
                range: 6000,
                tilt: 50,
            }

            // `viewerDiv` contains iTowns' rendering area (`<canvas>`)
            const viewerDiv = document.getElementById('viewerDiv');

            // Create a GlobeView
            const view = new itowns.GlobeView(viewerDiv, placement);

            // Setup loading screen and debug menu
            setupLoadingScreen(viewerDiv, view);
            const debugMenu = new GuiTools('menuDiv', view);



            // ---------- DISPLAY CONTEXTUAL DATA : ----------

            // Add one imagery layer to the scene. This layer's properties are defined in a json file, but it could be
            // defined as a plain js object. See `Layer` documentation for more info.
            itowns.Fetcher.json('layers/JSONLayers/Ortho.json').then((config) => {
                config.source = new itowns.WMTSSource(config.source);
                view.addLayer(
                    new itowns.ColorLayer(config.id, config),
                ).then(debugMenu.addLayerGUI.bind(debugMenu));
            });

            // Add two elevation layers, each with a different level of detail. Here again, each layer's properties are
            // defined in a json file.
            function addElevationLayerFromConfig(config) {
                config.source = new itowns.WMTSSource(config.source);
                view.addLayer(
                    new itowns.ElevationLayer(config.id, config),
                ).then(debugMenu.addLayerGUI.bind(debugMenu));
            }
            itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);



            // ---------- ADD NAVIGATION WIDGET : ----------

            const widgets = new itowns_widgets.Navigation(view);

            // Example on how to add a new button to the widgets menu
            widgets.addButton(
                'rotate-up',
                '<p style="font-size: 20px">&#8595</p>',
                'rotate camera up',
                () => {
                    view.controls.lookAtCoordinate({
                        tilt: view.controls.getTilt() - 10,
                        time: 500,
                    });
                },
                'button-bar-rotation',
            );
            widgets.addButton(
                'rotate-down',
                '<p style="font-size: 20px">&#8593</p>',
                'rotate camera down',
                () => {
                    view.controls.lookAtCoordinate({
                        tilt: view.controls.getTilt() + 10,
                        time: 500,
                    });
                },
                'button-bar-rotation',
            );
            widgets.addButton(
                'reset-position',
                '&#8634',
                'reset position',
                () => { view.controls.lookAtCoordinate(placement) },
            );



            // ---------- DEBUG TOOLS : ----------

            debug.createTileDebugUI(debugMenu.gui, view);

            window.view = view;
            window.itowns = itowns;
            window.THREE = THREE;

        </script>
    </body>
</html>
